Mechanical movement.



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.ltUBlilt'l. J. leOItMAX. OF BROOKLYN. Ili\\ YUltli.

MECHANICAL IVIOVEIVIENT.

Application filed June 5,

To (1H ie/20m it may concern.

Be it known that l, .ltonnirr J. FoiinAN. a citizei'i of the l'nited States. residing at- Brooklyn, in the county of Kings and State of New York, have invented a new and use ful Mechanical .\[ovement,' of which the following is a specification. 7

This invention relates to mechanical movements, and its principal object is to pro 'ide an improved form of such movement wherein a disk such as a belt pulley or gear wheel may he so mounted on a shaft that relative angular adjustment of the shaft and disks may he varied at will.

Another object of the invention to provide and improve the means for hracing the disks to the shaft.

The invention consists in general of a shaft having a spider rigidly mounted thereon, and levers ctinnecting the spider with a disk free to rotate on the shaft, the connect ion of said levers with the disk heing variahle at will.

With the ahove and other ohjects in view, as will he 'iiereina-l'ter more apparent. the in- .vention further consists incertain novel details of construction and combinations of parts, hereinafter fully set forth, illustrated in the accompanying drawings, and specifically claimed.

in the accompanying drawings, like characters of reference indicate. like parts in the several views, and; Figure 1 is a front elevation of a mechanical movement, constructed in accordance with this invention, one position being shown in full lines, and another position being shown in dotted lines. Fig. 2 is a rear elevation of the same, the parts heing shown in a position similar to the dotted line position of l ig. 1. Fig. 3 is a detail view in elevation of a portion of the disk and one of the links. I

Referring now to the dri'iwing the numeral 10 indicates a shaft whereon is i-otahly mounted a disk ti. This disk 11 is to he understood as typi 'al of any form of disk such as a helt pulley, gear wheel. sprocket wheel, or in some instances may indicate one of the members of a clutch. ltigidly attached to thc shaft upon one side of the disk ll, is a spider having a plurality of arms 12 suitalgly hraced together as indicated at 12%. 1 Upon the opposite side ol the disk 1 I is prelsired point oti that disk to the spidei and 7 erahly mounted a disk 1-]. lt is to he iiiidni Specification of Letters Patent.

Patented May 25, 1909.

1908. siiainoessoss.

stood that. in either case the disk may he snh i stituted for the spider, thus making a disk proper relation to the disk It.

upon each side of the disk ll, or the spider mayhe siihstituted for the disk '14, thus mak ing a spider upon either side of the disk 11 t. In either event the disk lslwill act the same as the spider. Between thedisks ll and 1- are spider arms 15. (lnitie slots 16 are formed in the disk 1 l and a bolt 17' connects the spider arms 12 and 15, passing through the slots to. In the present instance there are shown six arms 12 and three arms 15.

links being arranged in pairs and one of each pair lying on opposite sides of the disk ll;

'lhese links ll are pivotally ttitltit 'twi tti the spider arms by bolts 2! and shits 22 iii-ear ranged in the disk it to accoiiimothite the said bolts 21. Slots 23, each preferahiy provided with a rack 24- are formed in the disk 1], and constitute guides for the free ends of the links '20. Each pair of links 2U is connected hy a holt 125 prcl'erahly carrying a pinion 26. The holts 25 are so arranged as to he i'cadily tightened to form a clamp for the pinions 26.

In the present instance the device is shown as provided with a crank arm 2(1 on the shaft, hiitv this is not an essential feature of the invention.

in the operation of the device, let it he asstiiiied that the holts 25 and 19 are loose. By rotating the disk H or the spider i21'0ltttive to the disk 11, the gears 26 are 'auscd to move in or out along the guideslots 23 At the same time the guide slots it. act to hold the ends of the spider :irins ti. and lit in heti the desired point of :ittaclinieiit has heen reached, it is simply necessary to tighten either the bolt 25 or the holt lb. This secnrely locks the device in position and the tread is then transmitted from the spider to the desired point upon the disk it. in the disk it is assumed to he the driving llitllllHl'. the tread may he tran mitted from the dethen to the shaft it).

it is obvious that many minor chaint' in order may be made inthe form and proportions of the devicewithout departing from the material principles thereof. "-It isnot'therefore desired to confine the invention to the exact form herein shown and described, but it is Wished to include all such as properly-come within the scope thereof.

Having thus described the invention, What is claimed as new,- is

'1. In a device of the kind described, a

shaft, a spider rigidly attached thereto, a

disk rotatably mounted upon said shaft and provided with a plurality -,of guide slots'each aving a rack formed on one side thereof,

links pivo tally connected to said spider, bolts passing through said links and guide 'slots,"

pinions carried by said bolts and engaging said racks,vsaid'-bolts being adapted to clamp the ends of said links in desired position in said slots. I

2. In .a device. of the kind described, a shaft, a spider rigidly attached :thereto," a

disk rotatably mounted on said" shaft "and provided with a plurality of guide slots hav ing a rack formed on one side thereof and a second series of'guide slots of arcuate form,

bolts passing through the spider arms and said arcuate slots, links pivotally connectedto said spider, 'andbolts each carrying a pinion engaging, one of said'racks,said bolts eing held on the outer end of said links and passing through said links,- pinions and guide slots and, adapted to clampth'e ends of said links in the desired position in said slots.

3. In a device of the kind described, a

. shaft, .a disk rotatably mounted on said shaft provided with a plurality of guide slots each havinga rack formed 0110110 side thereof and a second series of guide slots of arcuatc form arranged near the periphery of said disk, a'

spider rigidly mounted on saidshaft carried on one side of said disk, a second spider rigidly mounted on the shaft and carried on the opposite sideof said disk, the second spider.

hzw'ing one-half as many arms as the first spider, said arms being arranged opposite every other one of the arms ofthe first spider,

bolt-s connecting the arms of the second spider with every other one of the arms of the -I11Sl) I spiderpassing through the :Ll'l'HILI-C g ROBERT J-.(FORMAN.

Witnesses: v

JA$. H. FOR-MAN, I 7 ROBERT M. FoRMAN. 

